Marking pen



FIG. 1 is a perspective view of marking pen showing my new design;

FIG. 2 is a perspective view of the marking pen with the cap member removed for convenience of illustration;

FIG. 3 is a front elevational view with respect to FIG. 1 on an enlarged scale;

FIG. 4 is a left side elevational view of FIG. 3;

FIG. 5 is a rear elevational view of FIG. 3;

FIG. 6 is a top plan view of FIG. 3;

FIG. 7 is a bottom plan view of FIG. 3;

FIG. 8 is a front elevational view with respect to FIG. 2 on an enlarged scale;

FIG. 9 is a right side elevational view of FIG. 8; and

FIG. 10 is a bottom plan view of FIG. 8. 

The ornamental design for a marking pen, as shown. 